New South Wales Premier Barry O'Farrell has defended the Liberal Party's handling of allegations against three State Government MPs.

Mr O'Farrell was overseas last week when the Independent Commission Against Corruption (ICAC) announced inquiries into allegations that former Energy Minister Chris Hartcher and two government backbenchers, Chris Spence and Darren Webber, solicited payments for favours.

The Opposition has used the first Parliamentary Question Time of the year to put pressure on the Government over the ICAC inquiries.

In his first comments since the inquiries were announced last week, Mr O'Farrell said it was the Liberal Party who referred the initial allegations for investigation.

In response to a question from MP Michael Daley, he also dismissed suggestions he should have suspended the three MPs as soon as their offices were raided last year.

"No-one knew what those raids were about until I believe a press release was issued last week when I was overseas by ICAC," he said.

"If the member for Maroubra (Michael Daley) paid more attention to the proceedings of this House, he would also know that the ICAC prevents members who are the subject of any investigations - including the raids like those referred to last year - [from] talking to anyone about what's going on."

Mr O'Farrell has denied his Government is in crisis over the recent ICAC scandal and the pre-selection stoush between the Liberal and National parties.

Just a day after the ICAC inquiry was announced, Primary Industries Minister Katrina Hodgkinson announced she was seeking pre-selection to run against her Liberal Cabinet colleague Pru Goward in the seat of Goulburn at the next election.

But Mr O'Farrell told Parliament he rejects suggestions that the dramas are consuming the Government.

"This is a Government focused very much on the public of New South Wales, the public of New South Wales that turned their back comprehensively on those opposite because all they were interested in was themselves, their dealings and their politics," he said.

"We'll keep focusing on the public interest, we'll ensure that our independent integrity agencies are well resourced to take care of those other issues."